Impact of sustainable office buildings on occupant`s comfort and
... there are other financial benefits. Such benefits could occur through capital and rental value premiums, higher occupancy rates, reduced operational costs or a reduced risk premium. Most of these points, however, also would not account for private investors who are using the building for their own n ...
... there are other financial benefits. Such benefits could occur through capital and rental value premiums, higher occupancy rates, reduced operational costs or a reduced risk premium. Most of these points, however, also would not account for private investors who are using the building for their own n ...
User Guide for Hospitals
... Table 40: Assumed lighting loads for the base case and improved case. ............................................................. 85 Table 41: Description of T5 technology ................................................................................................................. 86 Table 42: ...
... Table 40: Assumed lighting loads for the base case and improved case. ............................................................. 85 Table 41: Description of T5 technology ................................................................................................................. 86 Table 42: ...
Domestic cold pitched roofs in the UK
... Heat and water vapour passes from the house into the roof space by both conduction and diffusion through the ceiling and insulation as well as by air motion through gaps, cracks and holes in the ceiling. The rate of transfer depends on the amount of insulation, the presence or absence of vapour cont ...
... Heat and water vapour passes from the house into the roof space by both conduction and diffusion through the ceiling and insulation as well as by air motion through gaps, cracks and holes in the ceiling. The rate of transfer depends on the amount of insulation, the presence or absence of vapour cont ...
Heat recovery with hybrid ventilation in office
... Natural ventilation is used more often. The new office buildings created in the Netherlands have to fulfil the demands of Dutch government. The goal of the Dutch government is to create almost zero energy buildings at around 2018 (Agentschap NL, 2013). Not only in the production of energy but also i ...
... Natural ventilation is used more often. The new office buildings created in the Netherlands have to fulfil the demands of Dutch government. The goal of the Dutch government is to create almost zero energy buildings at around 2018 (Agentschap NL, 2013). Not only in the production of energy but also i ...
Plate Heat Exchangers for Marine Applications
... The manufacturer reserves the right to change the specifications in force at any time. ...
... The manufacturer reserves the right to change the specifications in force at any time. ...
Energy-Smart Calculation of Thermal Loads in Mobile and
... The common practice in air conditioning engineering includes a primary calculation of thermal loads. Consecutively, the refrigeration system is selected to provide the required cooling or heating load. An alternate design approach in which the thermal loads are not only calculated as the initial des ...
... The common practice in air conditioning engineering includes a primary calculation of thermal loads. Consecutively, the refrigeration system is selected to provide the required cooling or heating load. An alternate design approach in which the thermal loads are not only calculated as the initial des ...
Passivhaus primer: Designer`s guide A guide for the design team
... this means that any linear ( two dimensional )thermal bridges should have a psi (Ψ) value of ≤ 0.01 W/mK. In a Passivhaus the heat loss areas and thermal bridges are calculated relative to the external boundary layer, and with good detailing it is possible to achieve negative psi values in some case ...
... this means that any linear ( two dimensional )thermal bridges should have a psi (Ψ) value of ≤ 0.01 W/mK. In a Passivhaus the heat loss areas and thermal bridges are calculated relative to the external boundary layer, and with good detailing it is possible to achieve negative psi values in some case ...
Energy efficient control of variable speed pumps in
... chiller is associated with one constant condenser water pump and one constant primary chilled water pump. To avoid the chilled water pipelines and terminal units from suffering extremely high pressure, the secondary chilled water system is divided into four zones and only Zone 2 (indicated as B in F ...
... chiller is associated with one constant condenser water pump and one constant primary chilled water pump. To avoid the chilled water pipelines and terminal units from suffering extremely high pressure, the secondary chilled water system is divided into four zones and only Zone 2 (indicated as B in F ...
Forced-Circulation Air-Cooling and Air-Heating Coils
... 1) Application of coils at low velocity can lead to excessive fouling. 2) Application of coils at low velocity can lead to possible air entrapment. 3) Differences in coil design/type affect the variation in low Re heat transfer coefficient. On lower limit, Re shall exceed 700 at tgm. ...
... 1) Application of coils at low velocity can lead to excessive fouling. 2) Application of coils at low velocity can lead to possible air entrapment. 3) Differences in coil design/type affect the variation in low Re heat transfer coefficient. On lower limit, Re shall exceed 700 at tgm. ...
Modeling and CFD Analysis of Tube in Tube Helical Coil Heat
... exchanger or tube in tube helical coil heat exchanger with two (2) numbers of turns. For simplification in numerical analysis I consider only two turns but in practical problems it may be large number of turns depending on the requirements. The coil diameter (D) was varying from 80mm to 240mm in an ...
... exchanger or tube in tube helical coil heat exchanger with two (2) numbers of turns. For simplification in numerical analysis I consider only two turns but in practical problems it may be large number of turns depending on the requirements. The coil diameter (D) was varying from 80mm to 240mm in an ...
as PDF
... heat fluxes. Reviews of these research can be found in Ostrach (1988) and Hyun (1994). The rectangular cavity is not an adequate model for many geophysical situations where a variable (or sloping) geometry has a significant effect on the system. However, the convective flows in triangular shaped enclos ...
... heat fluxes. Reviews of these research can be found in Ostrach (1988) and Hyun (1994). The rectangular cavity is not an adequate model for many geophysical situations where a variable (or sloping) geometry has a significant effect on the system. However, the convective flows in triangular shaped enclos ...
pdf - University Of Nigeria Nsukka
... compact and centralized space on single but communicable levels. Centralized locations were appropriated for activity spaces or activities that are most often used by the majority (Uzuegbunam, 2011). Ventilation and Exhaust system, which is also BernoulliVenturi effect, was the base design strategy ...
... compact and centralized space on single but communicable levels. Centralized locations were appropriated for activity spaces or activities that are most often used by the majority (Uzuegbunam, 2011). Ventilation and Exhaust system, which is also BernoulliVenturi effect, was the base design strategy ...
CFD Simulation and Experimental Study on Air - Purdue e-Pubs
... which mainly consists of multi-port brazed aluminum flat-tubes and louver fins. It has been commonly used in the automotive air-conditioning for years. Recentlyˈthe MCHX has been paid more and more attention by HVAC&R (heating, ventilating, air-conditioning and refrigeration) industries and used in ...
... which mainly consists of multi-port brazed aluminum flat-tubes and louver fins. It has been commonly used in the automotive air-conditioning for years. Recentlyˈthe MCHX has been paid more and more attention by HVAC&R (heating, ventilating, air-conditioning and refrigeration) industries and used in ...
Studying Heat Transfer and Fluid flow of Forced Convection through
... ρ i: ideal gas density, Kg/m3 βe : thermal expansion coefficient of fluid (1/K) υ : kinematics viscosity ,m2/sec Subscripts i: ideal gas h: hydraulic diameter 3-INTRODUCTION Heat sinks are commonly used in many fields of industry as cooling electronic devices , and electronic component cooling becom ...
... ρ i: ideal gas density, Kg/m3 βe : thermal expansion coefficient of fluid (1/K) υ : kinematics viscosity ,m2/sec Subscripts i: ideal gas h: hydraulic diameter 3-INTRODUCTION Heat sinks are commonly used in many fields of industry as cooling electronic devices , and electronic component cooling becom ...
Indiana University - Purdue University Fort Wayne Department of Engineering ENGR 411
... from freezing. A thermostatic expansion valve was chosen to be implemented into the design. To avoid freezing the evaporator outlet temperature was chosen to be 8°C and the cooling load was chosen to be 1.5 kW. From these specifications, the thermostatic valve that will be used is the TEA 20-1. A de ...
... from freezing. A thermostatic expansion valve was chosen to be implemented into the design. To avoid freezing the evaporator outlet temperature was chosen to be 8°C and the cooling load was chosen to be 1.5 kW. From these specifications, the thermostatic valve that will be used is the TEA 20-1. A de ...
Aalborg Universitet ventilation systems
... between flats was studied using multi-zone model and the pressure boundary condition outside building facades was obtained from our previous wind tunnel experiments. The cross-infection risks were assessed using Wells-Riley model. The influence of air tightness of windows and doors on air change and ...
... between flats was studied using multi-zone model and the pressure boundary condition outside building facades was obtained from our previous wind tunnel experiments. The cross-infection risks were assessed using Wells-Riley model. The influence of air tightness of windows and doors on air change and ...
PROCEEDINGS Editors: Marcel Loomans, Eindhoven University of Technology Marije te Kulve, Maastricht University
... between flats was studied using multi-zone model and the pressure boundary condition outside building facades was obtained from our previous wind tunnel experiments. The cross-infection risks were assessed using Wells-Riley model. The influence of air tightness of windows and doors on air change and ...
... between flats was studied using multi-zone model and the pressure boundary condition outside building facades was obtained from our previous wind tunnel experiments. The cross-infection risks were assessed using Wells-Riley model. The influence of air tightness of windows and doors on air change and ...
Heat Exchangers Lecture
... • Heat transfer in a heat exchanger usually involves convection in each fluid and conduction through the wall separating the two fluids. Thus it is convenient, in heat exchangers analysis, to work with an overall heat transfer coefficient U that accounts for the contribution of all these effects on ...
... • Heat transfer in a heat exchanger usually involves convection in each fluid and conduction through the wall separating the two fluids. Thus it is convenient, in heat exchangers analysis, to work with an overall heat transfer coefficient U that accounts for the contribution of all these effects on ...
Condensation Targeter II: Modelling surface
... may result in conditions suitable for mould growth but not characterised as a problem by examining the mean conditions. 2. The model predicts mean conditions within two zones of the building. Spatial averaging does not account for high condensation risk in specific rooms of a dwelling and at areas o ...
... may result in conditions suitable for mould growth but not characterised as a problem by examining the mean conditions. 2. The model predicts mean conditions within two zones of the building. Spatial averaging does not account for high condensation risk in specific rooms of a dwelling and at areas o ...
Engineering Issue: Indoor Air Vapor Intrusion Mitigation - CLU-IN
... The stack effect is a process that induces a negative pressure in the interior of the building as warm air rises and escapes through the top of the building. In turn this process draws replacement air in through the openings in the lower portion of the building; some of these openings will draw in s ...
... The stack effect is a process that induces a negative pressure in the interior of the building as warm air rises and escapes through the top of the building. In turn this process draws replacement air in through the openings in the lower portion of the building; some of these openings will draw in s ...
User Guide for Offices
... to articulate a compelling business case for building green. The EDGE software includes modules for homes, hotels, hospitals, offices, and retail, with building-specific user guides accompanying them. This guide is specifically for new office building design and construction. EDGE is an innovation o ...
... to articulate a compelling business case for building green. The EDGE software includes modules for homes, hotels, hospitals, offices, and retail, with building-specific user guides accompanying them. This guide is specifically for new office building design and construction. EDGE is an innovation o ...
channelled thermal energy store with liquid heat transport medium
... In the charge period the hot heat transport medium gives a part of its heat content to the solid heat storage material by flowing through the heat store, which is cold at the beginning of the charge period. In case of short heat store the outlet temperature of the heat transport medium and the solid ...
... In the charge period the hot heat transport medium gives a part of its heat content to the solid heat storage material by flowing through the heat store, which is cold at the beginning of the charge period. In case of short heat store the outlet temperature of the heat transport medium and the solid ...
REVIEW ARTICLES AAEM
... Heat loss following cold water immersion is rapid because of the high thermal conductivity of water, and the greater surface area of the body exposed to cold water, which is 32 times that of air [18]. Evaporation. The most important mode of cooling during times of environmental heat stress is evapor ...
... Heat loss following cold water immersion is rapid because of the high thermal conductivity of water, and the greater surface area of the body exposed to cold water, which is 32 times that of air [18]. Evaporation. The most important mode of cooling during times of environmental heat stress is evapor ...
Mathematical Model of Heat Transfer for Contact Dryer
... It can be noticed that local values of temperature gradient and heat flux have variables along the cylinder size. These variables of given values are formed due to varied air convection in cylinder vicinity, i.e. air mixing and thermo siphon effect of the hood for conducting away heat air and evapor ...
... It can be noticed that local values of temperature gradient and heat flux have variables along the cylinder size. These variables of given values are formed due to varied air convection in cylinder vicinity, i.e. air mixing and thermo siphon effect of the hood for conducting away heat air and evapor ...
HVAC
HVAC (heating, ventilating, and air conditioning; also heating, ventilation, and air conditioning) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers).HVAC is important in the design of medium to large industrial and office buildings such as skyscrapers and in marine environments such as aquariums, where safe and healthy building conditions are regulated with respect to temperature and humidity, using fresh air from outdoors.Ventilating or ventilation (the V in HVAC) is the process of ""exchanging"" or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, and carbon dioxide. Ventilation removes unpleasant smells and excessive moisture, introduces outside air, keeps interior building air circulating, and prevents stagnation of the interior air.Ventilation includes both the exchange of air to the outside as well as circulation of air within the building. It is one of the most important factors for maintaining acceptable indoor air quality in buildings. Methods for ventilating a building may be divided into mechanical/forced and natural types.